package c4.Example15;
class Animal{
    public void shout(){
        System.out.println("喵喵喵...");
    }
}
class  Dog extends  Animal{
    public void shout(){
        System.out.println("汪汪汪....");
    }
    public void eat(){
        System.out.println("吃骨头....");
    }
}
public class Example15 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        Animal a1 =dog;
        a1.shout();
//        a1.eat(); Animal没有eat方法 所以eat无法使用
    }
}
